/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.
 */
package geb

/**
 * Mechanism for 3rd parties to receive notification when a browser page instance changes
 *
 * @deprecated Use {@link PageEventListener} instead
 */
@Deprecated
interface PageChangeListener {

    /**
     * Called first when the listener is registered, with {@code oldPage} as {@code null}
     * and {@code newPage} as the current page at time of registration, then each time
     * the browser's page instance changes.
     *
     * Note that this is not when the browser navigates to a new page, but when it's page <i>object</i>
     * changes.
     */
    void pageWillChange(Browser browser, Page oldPage, Page newPage)

}